Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PF_INET6 socket protocol family | |
1ab1457c | 3 | * Linux INET6 implementation |
1da177e4 LT |
4 | * |
5 | * Authors: | |
1ab1457c | 6 | * Pedro Roque <roque@di.fc.ul.pt> |
1da177e4 LT |
7 | * |
8 | * Adapted from linux/net/ipv4/af_inet.c | |
9 | * | |
67ba4152 | 10 | * Fixes: |
1da177e4 | 11 | * piggy, Karl Knutson : Socket protocol table |
67ba4152 IM |
12 | * Hideaki YOSHIFUJI : sin6_scope_id support |
13 | * Arnaldo Melo : check proc_net_create return, cleanups | |
1da177e4 LT |
14 | * |
15 | * This program is free software; you can redistribute it and/or | |
67ba4152 IM |
16 | * modify it under the terms of the GNU General Public License |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
1da177e4 LT |
19 | */ |
20 | ||
f3213831 | 21 | #define pr_fmt(fmt) "IPv6: " fmt |
1da177e4 LT |
22 | |
23 | #include <linux/module.h> | |
4fc268d2 | 24 | #include <linux/capability.h> |
1da177e4 LT |
25 | #include <linux/errno.h> |
26 | #include <linux/types.h> | |
27 | #include <linux/socket.h> | |
28 | #include <linux/in.h> | |
29 | #include <linux/kernel.h> | |
1da177e4 LT |
30 | #include <linux/timer.h> |
31 | #include <linux/string.h> | |
32 | #include <linux/sockios.h> | |
33 | #include <linux/net.h> | |
34 | #include <linux/fcntl.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/proc_fs.h> | |
38 | #include <linux/stat.h> | |
39 | #include <linux/init.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
1da177e4 LT |
41 | |
42 | #include <linux/inet.h> | |
43 | #include <linux/netdevice.h> | |
44 | #include <linux/icmpv6.h> | |
2cc7d573 | 45 | #include <linux/netfilter_ipv6.h> |
1da177e4 LT |
46 | |
47 | #include <net/ip.h> | |
48 | #include <net/ipv6.h> | |
49 | #include <net/udp.h> | |
ba4e58ec | 50 | #include <net/udplite.h> |
1da177e4 | 51 | #include <net/tcp.h> |
6d0bfe22 | 52 | #include <net/ping.h> |
1da177e4 LT |
53 | #include <net/protocol.h> |
54 | #include <net/inet_common.h> | |
1668e010 | 55 | #include <net/route.h> |
1da177e4 LT |
56 | #include <net/transp_v6.h> |
57 | #include <net/ip6_route.h> | |
58 | #include <net/addrconf.h> | |
f564f45c | 59 | #include <net/ndisc.h> |
1da177e4 LT |
60 | #ifdef CONFIG_IPV6_TUNNEL |
61 | #include <net/ip6_tunnel.h> | |
62 | #endif | |
cb72d382 | 63 | #include <net/calipso.h> |
915d7e5e | 64 | #include <net/seg6.h> |
1da177e4 | 65 | |
7c0f6ba6 | 66 | #include <linux/uaccess.h> |
7bc570c8 | 67 | #include <linux/mroute6.h> |
1da177e4 | 68 | |
a6024562 TH |
69 | #include "ip6_offload.h" |
70 | ||
1da177e4 LT |
71 | MODULE_AUTHOR("Cast of dozens"); |
72 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
73 | MODULE_LICENSE("GPL"); | |
74 | ||
f1267347 | 75 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
76 | * build a new socket. |
77 | */ | |
78 | static struct list_head inetsw6[SOCK_MAX]; | |
79 | static DEFINE_SPINLOCK(inetsw6_lock); | |
80 | ||
56d417b1 BH |
81 | struct ipv6_params ipv6_defaults = { |
82 | .disable_ipv6 = 0, | |
83 | .autoconf = 1, | |
84 | }; | |
85 | ||
647c0c70 | 86 | static int disable_ipv6_mod; |
56d417b1 BH |
87 | |
88 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
89 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
90 | ||
91 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
92 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
93 | ||
94 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
95 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 96 | |
e4348637 DA |
97 | bool ipv6_mod_enabled(void) |
98 | { | |
99 | return disable_ipv6_mod == 0; | |
100 | } | |
101 | EXPORT_SYMBOL_GPL(ipv6_mod_enabled); | |
102 | ||
1da177e4 LT |
103 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
104 | { | |
105 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
106 | ||
107 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
108 | } | |
109 | ||
3f378b68 EP |
110 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
111 | int kern) | |
1da177e4 LT |
112 | { |
113 | struct inet_sock *inet; | |
114 | struct ipv6_pinfo *np; | |
115 | struct sock *sk; | |
1da177e4 LT |
116 | struct inet_protosw *answer; |
117 | struct proto *answer_prot; | |
118 | unsigned char answer_flags; | |
af1afe86 YH |
119 | int try_loading_module = 0; |
120 | int err; | |
1da177e4 | 121 | |
79462ad0 HFS |
122 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
123 | return -EINVAL; | |
124 | ||
1da177e4 | 125 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
126 | lookup_protocol: |
127 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 128 | rcu_read_lock(); |
696adfe8 | 129 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 130 | |
696adfe8 | 131 | err = 0; |
1da177e4 LT |
132 | /* Check the non-wild match. */ |
133 | if (protocol == answer->protocol) { | |
134 | if (protocol != IPPROTO_IP) | |
135 | break; | |
136 | } else { | |
137 | /* Check for the two wild cases. */ | |
138 | if (IPPROTO_IP == protocol) { | |
139 | protocol = answer->protocol; | |
140 | break; | |
141 | } | |
142 | if (IPPROTO_IP == answer->protocol) | |
143 | break; | |
144 | } | |
af1afe86 | 145 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
146 | } |
147 | ||
696adfe8 | 148 | if (err) { |
af1afe86 YH |
149 | if (try_loading_module < 2) { |
150 | rcu_read_unlock(); | |
151 | /* | |
152 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
153 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
154 | */ | |
155 | if (++try_loading_module == 1) | |
156 | request_module("net-pf-%d-proto-%d-type-%d", | |
157 | PF_INET6, protocol, sock->type); | |
158 | /* | |
159 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
160 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
161 | */ | |
162 | else | |
163 | request_module("net-pf-%d-proto-%d", | |
164 | PF_INET6, protocol); | |
165 | goto lookup_protocol; | |
166 | } else | |
167 | goto out_rcu_unlock; | |
168 | } | |
169 | ||
170 | err = -EPERM; | |
af31f412 EB |
171 | if (sock->type == SOCK_RAW && !kern && |
172 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 173 | goto out_rcu_unlock; |
1da177e4 LT |
174 | |
175 | sock->ops = answer->ops; | |
1da177e4 | 176 | answer_prot = answer->prot; |
1da177e4 LT |
177 | answer_flags = answer->flags; |
178 | rcu_read_unlock(); | |
179 | ||
63159f29 | 180 | WARN_ON(!answer_prot->slab); |
1da177e4 | 181 | |
af1afe86 | 182 | err = -ENOBUFS; |
11aa9c28 | 183 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
63159f29 | 184 | if (!sk) |
1da177e4 LT |
185 | goto out; |
186 | ||
187 | sock_init_data(sock, sk); | |
188 | ||
af1afe86 | 189 | err = 0; |
1da177e4 | 190 | if (INET_PROTOSW_REUSE & answer_flags) |
4a17fd52 | 191 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
192 | |
193 | inet = inet_sk(sk); | |
469de9b9 | 194 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
195 | |
196 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 197 | inet->inet_num = protocol; |
1da177e4 LT |
198 | if (IPPROTO_RAW == protocol) |
199 | inet->hdrincl = 1; | |
200 | } | |
201 | ||
e6848976 | 202 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
203 | sk->sk_family = PF_INET6; |
204 | sk->sk_protocol = protocol; | |
205 | ||
206 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
207 | ||
208 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
209 | np->hop_limit = -1; | |
f935aa9e | 210 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
211 | np->mc_loop = 1; |
212 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
22b6722b | 213 | np->repflow = net->ipv6.sysctl.flowlabel_reflect; |
9fe516ba | 214 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 215 | |
1da177e4 LT |
216 | /* Init the ipv4 part of the socket since we can have sockets |
217 | * using v6 API for ipv4. | |
218 | */ | |
219 | inet->uc_ttl = -1; | |
220 | ||
221 | inet->mc_loop = 1; | |
222 | inet->mc_ttl = 1; | |
223 | inet->mc_index = 0; | |
224 | inet->mc_list = NULL; | |
4c507d28 | 225 | inet->rcv_tos = 0; |
1da177e4 | 226 | |
974eda11 | 227 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
1da177e4 LT |
228 | inet->pmtudisc = IP_PMTUDISC_DONT; |
229 | else | |
230 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 231 | /* |
e6848976 ACM |
232 | * Increment only the relevant sk_prot->socks debug field, this changes |
233 | * the previous behaviour of incrementing both the equivalent to | |
234 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
235 | * | |
236 | * This allows better debug granularity as we'll know exactly how many | |
237 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
238 | * transport protocol socks. -acme | |
239 | */ | |
240 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 241 | |
c720c7e8 | 242 | if (inet->inet_num) { |
1da177e4 LT |
243 | /* It assumes that any protocol which allows |
244 | * the user to assign a number at socket | |
245 | * creation time automatically shares. | |
246 | */ | |
c720c7e8 | 247 | inet->inet_sport = htons(inet->inet_num); |
086c653f CG |
248 | err = sk->sk_prot->hash(sk); |
249 | if (err) { | |
250 | sk_common_release(sk); | |
251 | goto out; | |
252 | } | |
1da177e4 LT |
253 | } |
254 | if (sk->sk_prot->init) { | |
af1afe86 YH |
255 | err = sk->sk_prot->init(sk); |
256 | if (err) { | |
1da177e4 LT |
257 | sk_common_release(sk); |
258 | goto out; | |
259 | } | |
260 | } | |
61023658 DA |
261 | |
262 | if (!kern) { | |
263 | err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk); | |
264 | if (err) { | |
265 | sk_common_release(sk); | |
266 | goto out; | |
267 | } | |
268 | } | |
1da177e4 | 269 | out: |
af1afe86 | 270 | return err; |
1da177e4 LT |
271 | out_rcu_unlock: |
272 | rcu_read_unlock(); | |
273 | goto out; | |
274 | } | |
275 | ||
032234d8 DA |
276 | static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len, |
277 | bool force_bind_address_no_port, bool with_lock) | |
3679d585 AI |
278 | { |
279 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; | |
280 | struct inet_sock *inet = inet_sk(sk); | |
281 | struct ipv6_pinfo *np = inet6_sk(sk); | |
282 | struct net *net = sock_net(sk); | |
283 | __be32 v4addr = 0; | |
284 | unsigned short snum; | |
285 | bool saved_ipv6only; | |
286 | int addr_type = 0; | |
287 | int err = 0; | |
288 | ||
5a079c30 | 289 | if (addr->sin6_family != AF_INET6) |
c349a528 | 290 | return -EAFNOSUPPORT; |
5a079c30 | 291 | |
1da177e4 | 292 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
3679d585 | 293 | if ((addr_type & IPV6_ADDR_MULTICAST) && sk->sk_type == SOCK_STREAM) |
1da177e4 LT |
294 | return -EINVAL; |
295 | ||
296 | snum = ntohs(addr->sin6_port); | |
4548b683 KJ |
297 | if (snum && snum < inet_prot_sock(net) && |
298 | !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) | |
1da177e4 LT |
299 | return -EACCES; |
300 | ||
3679d585 AI |
301 | if (with_lock) |
302 | lock_sock(sk); | |
1da177e4 LT |
303 | |
304 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 305 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
306 | err = -EINVAL; |
307 | goto out; | |
308 | } | |
309 | ||
310 | /* Check if the address belongs to the host. */ | |
311 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
312 | int chk_addr_ret; |
313 | ||
783ed5a7 VY |
314 | /* Binding to v4-mapped address on a v6-only socket |
315 | * makes no sense | |
316 | */ | |
9fe516ba | 317 | if (sk->sk_ipv6only) { |
783ed5a7 VY |
318 | err = -EINVAL; |
319 | goto out; | |
320 | } | |
63d9950b | 321 | |
a34f0b31 | 322 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 323 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b | 324 | chk_addr_ret = inet_addr_type(net, v4addr); |
49a60158 | 325 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
63d9950b VY |
326 | !(inet->freebind || inet->transparent) && |
327 | v4addr != htonl(INADDR_ANY) && | |
328 | chk_addr_ret != RTN_LOCAL && | |
329 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
330 | chk_addr_ret != RTN_BROADCAST) { |
331 | err = -EADDRNOTAVAIL; | |
1da177e4 | 332 | goto out; |
ca6982b8 | 333 | } |
1da177e4 LT |
334 | } else { |
335 | if (addr_type != IPV6_ADDR_ANY) { | |
336 | struct net_device *dev = NULL; | |
337 | ||
16ba5e8e | 338 | rcu_read_lock(); |
842df073 | 339 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
340 | if (addr_len >= sizeof(struct sockaddr_in6) && |
341 | addr->sin6_scope_id) { | |
342 | /* Override any existing binding, if another one | |
343 | * is supplied by user. | |
344 | */ | |
345 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
346 | } | |
1ab1457c | 347 | |
1da177e4 LT |
348 | /* Binding to link-local address requires an interface */ |
349 | if (!sk->sk_bound_dev_if) { | |
350 | err = -EINVAL; | |
16ba5e8e | 351 | goto out_unlock; |
1da177e4 | 352 | } |
16ba5e8e | 353 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
354 | if (!dev) { |
355 | err = -ENODEV; | |
16ba5e8e | 356 | goto out_unlock; |
1da177e4 LT |
357 | } |
358 | } | |
359 | ||
360 | /* ipv4 addr of the socket is invalid. Only the | |
361 | * unspecified and mapped address have a v4 equivalent. | |
362 | */ | |
363 | v4addr = LOOPBACK4_IPV6; | |
364 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
35a256fe TH |
365 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
366 | !(inet->freebind || inet->transparent) && | |
0a513f6a | 367 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 368 | dev, 0)) { |
1da177e4 | 369 | err = -EADDRNOTAVAIL; |
16ba5e8e | 370 | goto out_unlock; |
1da177e4 LT |
371 | } |
372 | } | |
16ba5e8e | 373 | rcu_read_unlock(); |
1da177e4 LT |
374 | } |
375 | } | |
376 | ||
c720c7e8 ED |
377 | inet->inet_rcv_saddr = v4addr; |
378 | inet->inet_saddr = v4addr; | |
1da177e4 | 379 | |
efe4208f | 380 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
1ab1457c | 381 | |
1da177e4 | 382 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 383 | np->saddr = addr->sin6_addr; |
1da177e4 | 384 | |
7ece54a6 MKL |
385 | saved_ipv6only = sk->sk_ipv6only; |
386 | if (addr_type != IPV6_ADDR_ANY && addr_type != IPV6_ADDR_MAPPED) | |
387 | sk->sk_ipv6only = 1; | |
388 | ||
1da177e4 | 389 | /* Make sure we are allowed to bind here. */ |
aac3fc32 AI |
390 | if (snum || !(inet->bind_address_no_port || |
391 | force_bind_address_no_port)) { | |
392 | if (sk->sk_prot->get_port(sk, snum)) { | |
393 | sk->sk_ipv6only = saved_ipv6only; | |
394 | inet_reset_saddr(sk); | |
395 | err = -EADDRINUSE; | |
396 | goto out; | |
397 | } | |
398 | err = BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk); | |
399 | if (err) { | |
400 | sk->sk_ipv6only = saved_ipv6only; | |
401 | inet_reset_saddr(sk); | |
402 | goto out; | |
403 | } | |
1da177e4 LT |
404 | } |
405 | ||
7ece54a6 | 406 | if (addr_type != IPV6_ADDR_ANY) |
1da177e4 LT |
407 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
408 | if (snum) | |
409 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
410 | inet->inet_sport = htons(inet->inet_num); |
411 | inet->inet_dport = 0; | |
412 | inet->inet_daddr = 0; | |
1da177e4 | 413 | out: |
3679d585 AI |
414 | if (with_lock) |
415 | release_sock(sk); | |
1da177e4 | 416 | return err; |
16ba5e8e ED |
417 | out_unlock: |
418 | rcu_read_unlock(); | |
419 | goto out; | |
1da177e4 | 420 | } |
7159039a | 421 | |
032234d8 DA |
422 | /* bind for INET6 API */ |
423 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
424 | { | |
425 | struct sock *sk = sock->sk; | |
426 | int err = 0; | |
427 | ||
428 | /* If the socket has its own bind function then use it. */ | |
429 | if (sk->sk_prot->bind) | |
430 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
431 | ||
432 | if (addr_len < SIN6_LEN_RFC2133) | |
433 | return -EINVAL; | |
434 | ||
435 | /* BPF prog is run before any checks are done so that if the prog | |
436 | * changes context in a wrong way it will be caught. | |
437 | */ | |
438 | err = BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr); | |
439 | if (err) | |
440 | return err; | |
441 | ||
442 | return __inet6_bind(sk, uaddr, addr_len, false, true); | |
443 | } | |
444 | EXPORT_SYMBOL(inet6_bind); | |
445 | ||
1da177e4 LT |
446 | int inet6_release(struct socket *sock) |
447 | { | |
448 | struct sock *sk = sock->sk; | |
449 | ||
63159f29 | 450 | if (!sk) |
1da177e4 LT |
451 | return -EINVAL; |
452 | ||
453 | /* Free mc lists */ | |
454 | ipv6_sock_mc_close(sk); | |
455 | ||
456 | /* Free ac lists */ | |
457 | ipv6_sock_ac_close(sk); | |
458 | ||
459 | return inet_release(sock); | |
460 | } | |
7159039a YH |
461 | EXPORT_SYMBOL(inet6_release); |
462 | ||
7d06b2e0 | 463 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
464 | { |
465 | struct ipv6_pinfo *np = inet6_sk(sk); | |
466 | struct sk_buff *skb; | |
467 | struct ipv6_txoptions *opt; | |
468 | ||
1da177e4 LT |
469 | /* Release rx options */ |
470 | ||
647c0c70 | 471 | skb = xchg(&np->pktoptions, NULL); |
53b24b8f | 472 | if (skb) |
1da177e4 | 473 | kfree_skb(skb); |
4b340ae2 | 474 | |
647c0c70 | 475 | skb = xchg(&np->rxpmtu, NULL); |
53b24b8f | 476 | if (skb) |
4b340ae2 | 477 | kfree_skb(skb); |
1da177e4 LT |
478 | |
479 | /* Free flowlabels */ | |
480 | fl6_free_socklist(sk); | |
481 | ||
482 | /* Free tx options */ | |
483 | ||
45f6fad8 ED |
484 | opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL); |
485 | if (opt) { | |
486 | atomic_sub(opt->tot_len, &sk->sk_omem_alloc); | |
487 | txopt_put(opt); | |
488 | } | |
1da177e4 | 489 | } |
3cf3dc6c ACM |
490 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
491 | ||
1da177e4 LT |
492 | /* |
493 | * This does both peername and sockname. | |
494 | */ | |
1ab1457c | 495 | |
1da177e4 | 496 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
9b2c45d4 | 497 | int peer) |
1da177e4 | 498 | { |
647c0c70 | 499 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
500 | struct sock *sk = sock->sk; |
501 | struct inet_sock *inet = inet_sk(sk); | |
502 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 503 | |
1da177e4 LT |
504 | sin->sin6_family = AF_INET6; |
505 | sin->sin6_flowinfo = 0; | |
506 | sin->sin6_scope_id = 0; | |
507 | if (peer) { | |
c720c7e8 | 508 | if (!inet->inet_dport) |
1da177e4 LT |
509 | return -ENOTCONN; |
510 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
511 | peer == 1) | |
512 | return -ENOTCONN; | |
c720c7e8 | 513 | sin->sin6_port = inet->inet_dport; |
efe4208f | 514 | sin->sin6_addr = sk->sk_v6_daddr; |
1da177e4 LT |
515 | if (np->sndflow) |
516 | sin->sin6_flowinfo = np->flow_label; | |
517 | } else { | |
efe4208f | 518 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
4e3fd7a0 | 519 | sin->sin6_addr = np->saddr; |
1da177e4 | 520 | else |
efe4208f | 521 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
1da177e4 | 522 | |
c720c7e8 | 523 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 524 | } |
842df073 HFS |
525 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
526 | sk->sk_bound_dev_if); | |
9b2c45d4 | 527 | return sizeof(*sin); |
1da177e4 | 528 | } |
7159039a YH |
529 | EXPORT_SYMBOL(inet6_getname); |
530 | ||
1da177e4 LT |
531 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
532 | { | |
533 | struct sock *sk = sock->sk; | |
3b1e0a65 | 534 | struct net *net = sock_net(sk); |
1da177e4 | 535 | |
647c0c70 | 536 | switch (cmd) { |
1da177e4 LT |
537 | case SIOCGSTAMP: |
538 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
539 | ||
ae40eb1e ED |
540 | case SIOCGSTAMPNS: |
541 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
542 | ||
1da177e4 LT |
543 | case SIOCADDRT: |
544 | case SIOCDELRT: | |
1ab1457c | 545 | |
a02cec21 | 546 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
547 | |
548 | case SIOCSIFADDR: | |
af284937 | 549 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 550 | case SIOCDIFADDR: |
af284937 | 551 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 552 | case SIOCSIFDSTADDR: |
af284937 | 553 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 554 | default: |
b5e5fa5e CH |
555 | if (!sk->sk_prot->ioctl) |
556 | return -ENOIOCTLCMD; | |
557 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
558 | } |
559 | /*NOTREACHED*/ | |
a02cec21 | 560 | return 0; |
1da177e4 | 561 | } |
7159039a YH |
562 | EXPORT_SYMBOL(inet6_ioctl); |
563 | ||
90ddc4f0 | 564 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
565 | .family = PF_INET6, |
566 | .owner = THIS_MODULE, | |
567 | .release = inet6_release, | |
568 | .bind = inet6_bind, | |
569 | .connect = inet_stream_connect, /* ok */ | |
570 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
571 | .accept = inet_accept, /* ok */ | |
572 | .getname = inet6_getname, | |
2c7d3dac | 573 | .poll_mask = tcp_poll_mask, /* ok */ |
543d9cfe ACM |
574 | .ioctl = inet6_ioctl, /* must change */ |
575 | .listen = inet_listen, /* ok */ | |
576 | .shutdown = inet_shutdown, /* ok */ | |
577 | .setsockopt = sock_common_setsockopt, /* ok */ | |
578 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
579 | .sendmsg = inet_sendmsg, /* ok */ |
580 | .recvmsg = inet_recvmsg, /* ok */ | |
05255b82 | 581 | #ifdef CONFIG_MMU |
93ab6cc6 | 582 | .mmap = tcp_mmap, |
05255b82 | 583 | #endif |
7ba42910 | 584 | .sendpage = inet_sendpage, |
45f91bdc JF |
585 | .sendmsg_locked = tcp_sendmsg_locked, |
586 | .sendpage_locked = tcp_sendpage_locked, | |
a0974dd3 | 587 | .splice_read = tcp_splice_read, |
32035585 TH |
588 | .read_sock = tcp_read_sock, |
589 | .peek_len = tcp_peek_len, | |
3fdadf7d | 590 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
591 | .compat_setsockopt = compat_sock_common_setsockopt, |
592 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 593 | #endif |
d1361840 | 594 | .set_rcvlowat = tcp_set_rcvlowat, |
1da177e4 LT |
595 | }; |
596 | ||
90ddc4f0 | 597 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
598 | .family = PF_INET6, |
599 | .owner = THIS_MODULE, | |
600 | .release = inet6_release, | |
601 | .bind = inet6_bind, | |
602 | .connect = inet_dgram_connect, /* ok */ | |
603 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
604 | .accept = sock_no_accept, /* a do nothing */ | |
605 | .getname = inet6_getname, | |
db5051ea | 606 | .poll_mask = udp_poll_mask, /* ok */ |
543d9cfe ACM |
607 | .ioctl = inet6_ioctl, /* must change */ |
608 | .listen = sock_no_listen, /* ok */ | |
609 | .shutdown = inet_shutdown, /* ok */ | |
610 | .setsockopt = sock_common_setsockopt, /* ok */ | |
611 | .getsockopt = sock_common_getsockopt, /* ok */ | |
612 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 613 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
614 | .mmap = sock_no_mmap, |
615 | .sendpage = sock_no_sendpage, | |
627d2d6b | 616 | .set_peek_off = sk_set_peek_off, |
3fdadf7d | 617 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
618 | .compat_setsockopt = compat_sock_common_setsockopt, |
619 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 620 | #endif |
1da177e4 LT |
621 | }; |
622 | ||
ec1b4cf7 | 623 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
624 | .family = PF_INET6, |
625 | .create = inet6_create, | |
626 | .owner = THIS_MODULE, | |
627 | }; | |
628 | ||
87c3efbf | 629 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
630 | { |
631 | struct list_head *lh; | |
632 | struct inet_protosw *answer; | |
1da177e4 | 633 | struct list_head *last_perm; |
87c3efbf DL |
634 | int protocol = p->protocol; |
635 | int ret; | |
1da177e4 LT |
636 | |
637 | spin_lock_bh(&inetsw6_lock); | |
638 | ||
87c3efbf | 639 | ret = -EINVAL; |
1da177e4 LT |
640 | if (p->type >= SOCK_MAX) |
641 | goto out_illegal; | |
642 | ||
643 | /* If we are trying to override a permanent protocol, bail. */ | |
644 | answer = NULL; | |
87c3efbf | 645 | ret = -EPERM; |
1da177e4 LT |
646 | last_perm = &inetsw6[p->type]; |
647 | list_for_each(lh, &inetsw6[p->type]) { | |
648 | answer = list_entry(lh, struct inet_protosw, list); | |
649 | ||
650 | /* Check only the non-wild match. */ | |
651 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
652 | if (protocol == answer->protocol) | |
653 | break; | |
654 | last_perm = lh; | |
655 | } | |
656 | ||
657 | answer = NULL; | |
658 | } | |
659 | if (answer) | |
660 | goto out_permanent; | |
661 | ||
662 | /* Add the new entry after the last permanent entry if any, so that | |
663 | * the new entry does not override a permanent entry when matched with | |
664 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 665 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
666 | * system automatically returns to the old behavior. |
667 | */ | |
668 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 669 | ret = 0; |
1da177e4 LT |
670 | out: |
671 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 672 | return ret; |
1da177e4 LT |
673 | |
674 | out_permanent: | |
f3213831 | 675 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
676 | goto out; |
677 | ||
678 | out_illegal: | |
f3213831 | 679 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
680 | p->type); |
681 | goto out; | |
682 | } | |
7159039a YH |
683 | EXPORT_SYMBOL(inet6_register_protosw); |
684 | ||
1da177e4 LT |
685 | void |
686 | inet6_unregister_protosw(struct inet_protosw *p) | |
687 | { | |
688 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 689 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
690 | p->protocol); |
691 | } else { | |
692 | spin_lock_bh(&inetsw6_lock); | |
693 | list_del_rcu(&p->list); | |
694 | spin_unlock_bh(&inetsw6_lock); | |
695 | ||
696 | synchronize_net(); | |
697 | } | |
698 | } | |
7159039a YH |
699 | EXPORT_SYMBOL(inet6_unregister_protosw); |
700 | ||
b9750ce1 ACM |
701 | int inet6_sk_rebuild_header(struct sock *sk) |
702 | { | |
b9750ce1 | 703 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 704 | struct dst_entry *dst; |
b9750ce1 ACM |
705 | |
706 | dst = __sk_dst_check(sk, np->dst_cookie); | |
707 | ||
63159f29 | 708 | if (!dst) { |
b9750ce1 | 709 | struct inet_sock *inet = inet_sk(sk); |
20c59de2 | 710 | struct in6_addr *final_p, final; |
4c9483b2 DM |
711 | struct flowi6 fl6; |
712 | ||
713 | memset(&fl6, 0, sizeof(fl6)); | |
714 | fl6.flowi6_proto = sk->sk_protocol; | |
efe4208f | 715 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 716 | fl6.saddr = np->saddr; |
4c9483b2 DM |
717 | fl6.flowlabel = np->flow_label; |
718 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
719 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
720 | fl6.fl6_dport = inet->inet_dport; |
721 | fl6.fl6_sport = inet->inet_sport; | |
e2d118a1 | 722 | fl6.flowi6_uid = sk->sk_uid; |
4c9483b2 DM |
723 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
724 | ||
45f6fad8 ED |
725 | rcu_read_lock(); |
726 | final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), | |
727 | &final); | |
728 | rcu_read_unlock(); | |
4c9483b2 | 729 | |
0e0d44ab | 730 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 | 731 | if (IS_ERR(dst)) { |
b9750ce1 | 732 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
733 | sk->sk_err_soft = -PTR_ERR(dst); |
734 | return PTR_ERR(dst); | |
b9750ce1 ACM |
735 | } |
736 | ||
6bd4f355 | 737 | ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
738 | } |
739 | ||
740 | return 0; | |
741 | } | |
b9750ce1 ACM |
742 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
743 | ||
a224772d ED |
744 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
745 | const struct inet6_skb_parm *opt) | |
399c07de | 746 | { |
92113bfd | 747 | const struct ipv6_pinfo *np = inet6_sk(sk); |
399c07de ACM |
748 | |
749 | if (np->rxopt.all) { | |
8b58a398 FW |
750 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
751 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || | |
ac1eabca | 752 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
399c07de ACM |
753 | np->rxopt.bits.rxflow) || |
754 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
755 | np->rxopt.bits.osrcrt)) || | |
756 | ((opt->dst1 || opt->dst0) && | |
757 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 758 | return true; |
399c07de | 759 | } |
92113bfd | 760 | return false; |
399c07de | 761 | } |
399c07de ACM |
762 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
763 | ||
7546dd97 | 764 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 765 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 766 | .func = ipv6_rcv, |
22061d80 VY |
767 | }; |
768 | ||
662397fd YH |
769 | static int __init ipv6_packet_init(void) |
770 | { | |
771 | dev_add_pack(&ipv6_packet_type); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | static void ipv6_packet_cleanup(void) | |
776 | { | |
777 | dev_remove_pack(&ipv6_packet_type); | |
778 | } | |
779 | ||
e43291cb DL |
780 | static int __net_init ipv6_init_mibs(struct net *net) |
781 | { | |
827da44c JS |
782 | int i; |
783 | ||
698365fa WC |
784 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
785 | if (!net->mib.udp_stats_in6) | |
0c7ed677 | 786 | return -ENOMEM; |
698365fa WC |
787 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
788 | if (!net->mib.udplite_stats_in6) | |
be713a44 | 789 | goto err_udplite_mib; |
698365fa WC |
790 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
791 | if (!net->mib.ipv6_statistics) | |
9261e537 | 792 | goto err_ip_mib; |
827da44c JS |
793 | |
794 | for_each_possible_cpu(i) { | |
795 | struct ipstats_mib *af_inet6_stats; | |
698365fa | 796 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
827da44c | 797 | u64_stats_init(&af_inet6_stats->syncp); |
827da44c JS |
798 | } |
799 | ||
800 | ||
698365fa WC |
801 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
802 | if (!net->mib.icmpv6_statistics) | |
9261e537 | 803 | goto err_icmp_mib; |
2a24444f ED |
804 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
805 | GFP_KERNEL); | |
806 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 807 | goto err_icmpmsg_mib; |
e43291cb | 808 | return 0; |
be713a44 | 809 | |
9261e537 | 810 | err_icmpmsg_mib: |
698365fa | 811 | free_percpu(net->mib.icmpv6_statistics); |
9261e537 | 812 | err_icmp_mib: |
698365fa | 813 | free_percpu(net->mib.ipv6_statistics); |
9261e537 | 814 | err_ip_mib: |
698365fa | 815 | free_percpu(net->mib.udplite_stats_in6); |
be713a44 | 816 | err_udplite_mib: |
698365fa | 817 | free_percpu(net->mib.udp_stats_in6); |
be713a44 | 818 | return -ENOMEM; |
e43291cb DL |
819 | } |
820 | ||
2c8c1e72 | 821 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 822 | { |
698365fa WC |
823 | free_percpu(net->mib.udp_stats_in6); |
824 | free_percpu(net->mib.udplite_stats_in6); | |
825 | free_percpu(net->mib.ipv6_statistics); | |
826 | free_percpu(net->mib.icmpv6_statistics); | |
2a24444f | 827 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
828 | } |
829 | ||
e7dc8494 | 830 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 831 | { |
0c96d8c5 DL |
832 | int err = 0; |
833 | ||
99bc9c4e | 834 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 835 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
6444f72b | 836 | net->ipv6.sysctl.flowlabel_consistency = 1; |
42240901 | 837 | net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; |
1855b7c3 HFS |
838 | net->ipv6.sysctl.idgen_retries = 3; |
839 | net->ipv6.sysctl.idgen_delay = 1 * HZ; | |
be26849b | 840 | net->ipv6.sysctl.flowlabel_state_ranges = 0; |
47d3d7ac TH |
841 | net->ipv6.sysctl.max_dst_opts_cnt = IP6_DEFAULT_MAX_DST_OPTS_CNT; |
842 | net->ipv6.sysctl.max_hbh_opts_cnt = IP6_DEFAULT_MAX_HBH_OPTS_CNT; | |
843 | net->ipv6.sysctl.max_dst_opts_len = IP6_DEFAULT_MAX_DST_OPTS_LEN; | |
844 | net->ipv6.sysctl.max_hbh_opts_len = IP6_DEFAULT_MAX_HBH_OPTS_LEN; | |
812918c4 | 845 | atomic_set(&net->ipv6.fib6_sernum, 1); |
e71e0349 | 846 | |
e43291cb DL |
847 | err = ipv6_init_mibs(net); |
848 | if (err) | |
849 | return err; | |
0c96d8c5 DL |
850 | #ifdef CONFIG_PROC_FS |
851 | err = udp6_proc_init(net); | |
852 | if (err) | |
853 | goto out; | |
6f8b13bc DL |
854 | err = tcp6_proc_init(net); |
855 | if (err) | |
856 | goto proc_tcp6_fail; | |
6ab57e7e DL |
857 | err = ac6_proc_init(net); |
858 | if (err) | |
859 | goto proc_ac6_fail; | |
0c96d8c5 DL |
860 | #endif |
861 | return err; | |
6f8b13bc DL |
862 | |
863 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
864 | proc_ac6_fail: |
865 | tcp6_proc_exit(net); | |
6f8b13bc DL |
866 | proc_tcp6_fail: |
867 | udp6_proc_exit(net); | |
e43291cb DL |
868 | out: |
869 | ipv6_cleanup_mibs(net); | |
870 | return err; | |
6f8b13bc | 871 | #endif |
81c1c178 DL |
872 | } |
873 | ||
2c8c1e72 | 874 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 875 | { |
0c96d8c5 DL |
876 | #ifdef CONFIG_PROC_FS |
877 | udp6_proc_exit(net); | |
6f8b13bc | 878 | tcp6_proc_exit(net); |
6ab57e7e | 879 | ac6_proc_exit(net); |
0c96d8c5 | 880 | #endif |
e43291cb | 881 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
882 | } |
883 | ||
884 | static struct pernet_operations inet6_net_ops = { | |
885 | .init = inet6_net_init, | |
886 | .exit = inet6_net_exit, | |
887 | }; | |
888 | ||
5f81bd2e CW |
889 | static const struct ipv6_stub ipv6_stub_impl = { |
890 | .ipv6_sock_mc_join = ipv6_sock_mc_join, | |
891 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, | |
65a2022e DA |
892 | .ipv6_dst_lookup = ip6_dst_lookup, |
893 | .fib6_get_table = fib6_get_table, | |
894 | .fib6_table_lookup = fib6_table_lookup, | |
895 | .fib6_lookup = fib6_lookup, | |
896 | .fib6_multipath_select = fib6_multipath_select, | |
901731b8 | 897 | .ip6_mtu_from_fib6 = ip6_mtu_from_fib6, |
5f81bd2e | 898 | .udpv6_encap_enable = udpv6_encap_enable, |
f564f45c | 899 | .ndisc_send_na = ndisc_send_na, |
e15a00aa | 900 | .nd_tbl = &nd_tbl, |
5f81bd2e CW |
901 | }; |
902 | ||
d74bad4e AI |
903 | static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = { |
904 | .inet6_bind = __inet6_bind, | |
905 | }; | |
906 | ||
1da177e4 LT |
907 | static int __init inet6_init(void) |
908 | { | |
1ab1457c | 909 | struct list_head *r; |
fe7ca2e1 | 910 | int err = 0; |
1da177e4 | 911 | |
b4772ef8 | 912 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
ef047f5e | 913 | |
fe7ca2e1 | 914 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 915 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
916 | INIT_LIST_HEAD(r); |
917 | ||
56d417b1 | 918 | if (disable_ipv6_mod) { |
f3213831 | 919 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
920 | goto out; |
921 | } | |
922 | ||
1da177e4 LT |
923 | err = proto_register(&tcpv6_prot, 1); |
924 | if (err) | |
925 | goto out; | |
926 | ||
927 | err = proto_register(&udpv6_prot, 1); | |
928 | if (err) | |
929 | goto out_unregister_tcp_proto; | |
930 | ||
ba4e58ec | 931 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
932 | if (err) |
933 | goto out_unregister_udp_proto; | |
934 | ||
ba4e58ec GR |
935 | err = proto_register(&rawv6_prot, 1); |
936 | if (err) | |
937 | goto out_unregister_udplite_proto; | |
938 | ||
6d0bfe22 LC |
939 | err = proto_register(&pingv6_prot, 1); |
940 | if (err) | |
941 | goto out_unregister_ping_proto; | |
1da177e4 | 942 | |
1da177e4 LT |
943 | /* We MUST register RAW sockets before we create the ICMP6, |
944 | * IGMP6, or NDISC control sockets. | |
945 | */ | |
7f4e4868 DL |
946 | err = rawv6_init(); |
947 | if (err) | |
948 | goto out_unregister_raw_proto; | |
1da177e4 LT |
949 | |
950 | /* Register the family here so that the init calls below will | |
951 | * be able to create sockets. (?? is this dangerous ??) | |
952 | */ | |
8eb55910 DM |
953 | err = sock_register(&inet6_family_ops); |
954 | if (err) | |
7f4e4868 | 955 | goto out_sock_register_fail; |
1da177e4 | 956 | |
1da177e4 LT |
957 | /* |
958 | * ipngwg API draft makes clear that the correct semantics | |
959 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 960 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
961 | * able to communicate via both network protocols. |
962 | */ | |
963 | ||
81c1c178 DL |
964 | err = register_pernet_subsys(&inet6_net_ops); |
965 | if (err) | |
966 | goto register_pernet_fail; | |
623d1a1a WC |
967 | err = ip6_mr_init(); |
968 | if (err) | |
969 | goto ipmr_fail; | |
15e66807 WC |
970 | err = icmpv6_init(); |
971 | if (err) | |
972 | goto icmp_fail; | |
9b0f976f | 973 | err = ndisc_init(); |
1da177e4 LT |
974 | if (err) |
975 | goto ndisc_fail; | |
9b0f976f | 976 | err = igmp6_init(); |
1da177e4 LT |
977 | if (err) |
978 | goto igmp_fail; | |
5f81bd2e | 979 | |
2cc7d573 HW |
980 | err = ipv6_netfilter_init(); |
981 | if (err) | |
982 | goto netfilter_fail; | |
1da177e4 LT |
983 | /* Create /proc/foo6 entries. */ |
984 | #ifdef CONFIG_PROC_FS | |
985 | err = -ENOMEM; | |
986 | if (raw6_proc_init()) | |
987 | goto proc_raw6_fail; | |
ba4e58ec GR |
988 | if (udplite6_proc_init()) |
989 | goto proc_udplite6_fail; | |
1da177e4 LT |
990 | if (ipv6_misc_proc_init()) |
991 | goto proc_misc6_fail; | |
1da177e4 LT |
992 | if (if6_proc_init()) |
993 | goto proc_if6_fail; | |
994 | #endif | |
e2fddf5e DL |
995 | err = ip6_route_init(); |
996 | if (err) | |
997 | goto ip6_route_fail; | |
2c861cc6 MK |
998 | err = ndisc_late_init(); |
999 | if (err) | |
1000 | goto ndisc_late_fail; | |
0a3e78ac DL |
1001 | err = ip6_flowlabel_init(); |
1002 | if (err) | |
1003 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
1004 | err = addrconf_init(); |
1005 | if (err) | |
1006 | goto addrconf_fail; | |
1da177e4 LT |
1007 | |
1008 | /* Init v6 extension headers. */ | |
248b238d DL |
1009 | err = ipv6_exthdrs_init(); |
1010 | if (err) | |
1011 | goto ipv6_exthdrs_fail; | |
1012 | ||
853cbbaa DL |
1013 | err = ipv6_frag_init(); |
1014 | if (err) | |
1015 | goto ipv6_frag_fail; | |
1da177e4 LT |
1016 | |
1017 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
1018 | err = udpv6_init(); |
1019 | if (err) | |
1020 | goto udpv6_fail; | |
e2ed4052 | 1021 | |
7f4e4868 DL |
1022 | err = udplitev6_init(); |
1023 | if (err) | |
1024 | goto udplitev6_fail; | |
1025 | ||
a6024562 TH |
1026 | err = udpv6_offload_init(); |
1027 | if (err) | |
1028 | goto udpv6_offload_fail; | |
1029 | ||
7f4e4868 DL |
1030 | err = tcpv6_init(); |
1031 | if (err) | |
1032 | goto tcpv6_fail; | |
1033 | ||
1034 | err = ipv6_packet_init(); | |
1035 | if (err) | |
1036 | goto ipv6_packet_fail; | |
94911fe3 | 1037 | |
6d0bfe22 LC |
1038 | err = pingv6_init(); |
1039 | if (err) | |
1040 | goto pingv6_fail; | |
1041 | ||
cb72d382 HD |
1042 | err = calipso_init(); |
1043 | if (err) | |
1044 | goto calipso_fail; | |
1045 | ||
915d7e5e DL |
1046 | err = seg6_init(); |
1047 | if (err) | |
1048 | goto seg6_fail; | |
1049 | ||
382ed724 VY |
1050 | err = igmp6_late_init(); |
1051 | if (err) | |
1052 | goto igmp6_late_err; | |
1053 | ||
94911fe3 BT |
1054 | #ifdef CONFIG_SYSCTL |
1055 | err = ipv6_sysctl_register(); | |
1056 | if (err) | |
1057 | goto sysctl_fail; | |
1058 | #endif | |
b7d6df57 PA |
1059 | |
1060 | /* ensure that ipv6 stubs are visible only after ipv6 is ready */ | |
1061 | wmb(); | |
1062 | ipv6_stub = &ipv6_stub_impl; | |
d74bad4e | 1063 | ipv6_bpf_stub = &ipv6_bpf_stub_impl; |
1da177e4 LT |
1064 | out: |
1065 | return err; | |
1066 | ||
94911fe3 BT |
1067 | #ifdef CONFIG_SYSCTL |
1068 | sysctl_fail: | |
382ed724 | 1069 | igmp6_late_cleanup(); |
94911fe3 | 1070 | #endif |
382ed724 VY |
1071 | igmp6_late_err: |
1072 | seg6_exit(); | |
915d7e5e DL |
1073 | seg6_fail: |
1074 | calipso_exit(); | |
cb72d382 HD |
1075 | calipso_fail: |
1076 | pingv6_exit(); | |
6d0bfe22 | 1077 | pingv6_fail: |
eca42aaf | 1078 | ipv6_packet_cleanup(); |
7f4e4868 DL |
1079 | ipv6_packet_fail: |
1080 | tcpv6_exit(); | |
1081 | tcpv6_fail: | |
a6024562 TH |
1082 | udpv6_offload_exit(); |
1083 | udpv6_offload_fail: | |
7f4e4868 DL |
1084 | udplitev6_exit(); |
1085 | udplitev6_fail: | |
1086 | udpv6_exit(); | |
1087 | udpv6_fail: | |
1088 | ipv6_frag_exit(); | |
853cbbaa DL |
1089 | ipv6_frag_fail: |
1090 | ipv6_exthdrs_exit(); | |
248b238d DL |
1091 | ipv6_exthdrs_fail: |
1092 | addrconf_cleanup(); | |
1da177e4 LT |
1093 | addrconf_fail: |
1094 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1095 | ip6_flowlabel_fail: |
2c861cc6 MK |
1096 | ndisc_late_cleanup(); |
1097 | ndisc_late_fail: | |
1da177e4 | 1098 | ip6_route_cleanup(); |
e2fddf5e | 1099 | ip6_route_fail: |
1da177e4 LT |
1100 | #ifdef CONFIG_PROC_FS |
1101 | if6_proc_exit(); | |
1102 | proc_if6_fail: | |
1da177e4 LT |
1103 | ipv6_misc_proc_exit(); |
1104 | proc_misc6_fail: | |
ba4e58ec GR |
1105 | udplite6_proc_exit(); |
1106 | proc_udplite6_fail: | |
1da177e4 LT |
1107 | raw6_proc_exit(); |
1108 | proc_raw6_fail: | |
1109 | #endif | |
2cc7d573 HW |
1110 | ipv6_netfilter_fini(); |
1111 | netfilter_fail: | |
1da177e4 LT |
1112 | igmp6_cleanup(); |
1113 | igmp_fail: | |
1114 | ndisc_cleanup(); | |
1115 | ndisc_fail: | |
623d1a1a | 1116 | ip6_mr_cleanup(); |
1da177e4 | 1117 | icmp_fail: |
81c1c178 | 1118 | unregister_pernet_subsys(&inet6_net_ops); |
15e66807 WC |
1119 | ipmr_fail: |
1120 | icmpv6_cleanup(); | |
81c1c178 | 1121 | register_pernet_fail: |
8eb55910 | 1122 | sock_unregister(PF_INET6); |
e2fddf5e | 1123 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1124 | out_sock_register_fail: |
1125 | rawv6_exit(); | |
6d0bfe22 LC |
1126 | out_unregister_ping_proto: |
1127 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1128 | out_unregister_raw_proto: |
1129 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1130 | out_unregister_udplite_proto: |
1131 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1132 | out_unregister_udp_proto: |
1133 | proto_unregister(&udpv6_prot); | |
1134 | out_unregister_tcp_proto: | |
1135 | proto_unregister(&tcpv6_prot); | |
1136 | goto out; | |
1137 | } | |
1138 | module_init(inet6_init); | |
1139 | ||
1da177e4 | 1140 | MODULE_ALIAS_NETPROTO(PF_INET6); |